Program ADKP service error

[David2024]

Hi:

    There is a HardFault error when I call interface HSE_ProgramAdkp() to set ADKP password, but there is no response, when stop, there is an HardFault error, the pHseSrvDesc and pAttr(debug key password) are all in on-cache, shows below:

from CFSR, it seems that there is a BussFault error in call  (*(Gpt_pConfig[coreID]->Gpt_pChannelConfig))[ChannelIndex].Gpt_pfNotification();

but I think the address is correct, so why does this happend?

Because program ADKP is irreversible, that means I can only do this once in one board?

[lukaszadrapa]

Hi @David2024 

it sound like read-while-write issue.

ADKP is stored in UTEST:

 

But UTEST is in the same partition like code block 0:

So, it's necessary to take care about the synchronization as described in HSE FW RM:

And yes, ADKP is one time programmable only.

Regards,

Lukas

[David2024]

Hi Lukas：

    Thanks for your detailed explanation, so that I need to put the command in RAM to avoid execute from flash block 0?

[lukaszadrapa]

Yes, running the code from RAM should solve the problem. However, it won't be enough to put only HSE_ProgramAdkp to RAM because it calls other functions...

[victory]

if put the code start from 0x500000 can total solve this problem?

[David2024]

solution：

1. run code from RAM;

2. suspend interrupt;

hope this can help you.